\chapter{二元一次方程组}

\input{units/czds2-ch5-subsec1}
\input{units/czds2-ch5-subsec2}
\input{units/czds2-ch5-subsec3}
\input{units/czds2-ch5-subsec4}
\input{units/czds2-ch5-subsec5}
\input{units/czds2-ch5-xiti1}

\input{units/czds2-ch5-subsec6}
\input{units/czds2-ch5-xiti2}

\input{units/czds2-ch5-xiaojie}
\input{units/czds2-ch5-fuxi}

